know people know noodle no know heart!
欧也 纯属娱乐~
you may know a person's face but not his heart.
You can know a man's face but not his heart,
或 It is impossible to judge a man's heart from his face
Cats hide their claws.
You may know a prson's face but not his heart.
Every one's faults are not written in their foreheads